Spring pad



Nov. 13, 1928. I 1,691,643

A. B. CLISSON SPRING PAD Filed Feb. 24, lee

INVENTOR.

A TTORNEYS of the springs, but is dependent upon the Fatented Nov. 13', T92.

ALBERT B. CLISSON, OF SYRACUSE, NEW YORK, ASSIGNOR TO THE PROSPERITY COM- IPAN'Y, :110., OF SYRACUSE, NEW YORK, A CORPORATION 0F,NEW YORK.

SFRHG PAD.

Application filed February 24, 1926. Serial No. 90,424.

springs so that the amount of final pressure delivered is not'dependent upon the strength force applied to the movable pressing elementor head.

The invention further consists in a spring pad construction embodying means for limiting the compressing of the springs, and the use of a comparatively small number of springs rather than a great number of comparatively small springs.

. The invention consists in the novel features and in the combinations and constructions hereinafter set forth and claimed.

In describing this invention reference is pressing machine embodying my invention.

Figure 2 is a fragmentary side elevation of this pad.

Figure 3 is a plan view .of a group of four springs showing themeans for attaching a group to the plate.

Figure 4 is a fragmentary plan face of the pad seen in Figure Figure his a plan view of a group of springs illustrating the tie plate connecting the springs.

Figure 6 is an elevation of the detached a I P Figure 7 is an inverted plan view partly broken away.

Figure 8 is a detail view of the tie plate.

1 The spring pad usually consists of two plates, spaced apart and springs located be- .tween them. 1 and 2 designates these'plates, and'3 the springs located between them,'the springs being arranged in groups and each group as here shown comprising four springs. The groups are spaced apart or located at intervals throughout the area of the plates 1 and 2 so that a comparatively small number of springs are used and these springs are stiffer compared with those of the spring pads in which the springs cover the entire area of the plates.

In spring pads heretofore used-it has been springs were often crushed beyond their elastic limit. 1 In order to prevent crushing of the springs and .also to limitthe elasticity of the pad so that full pressure can be applied, stops are provided for limiting the compression of the springs or limiting the relative movement of the plates 1- and 2. As here shown the plate 1, which is a top plate is provided with. stop shoulders 4 depending therefrom toward the bottom plate 2, these shoulders being secured to the plate 1 at intervals as by screws 5. In Figures 2' and 4 the springs are shown as arranged in pairs, and in Figures 3and 5 the springs are shown as arranged in groups of four, each group consisting of two pairs. The springs of each pair are connected by an integral wire connector 7 forming an extension of the coils of the springs. The connectors of the two pairs of each group are arranged side by side and secured to the plate 1 as by a forked or bifurcated rivet 8 embracing the connectors 7, and extending through a hole'in the plate 1, and clinched on the top side ofthe plate 1. The plate 1 is also preferably perforated throughout its area as at 9. The outer or lower ends of the springs are preferably connected together or those of each group are connected together as by a tie plate 10. This tie plate extends. under the lowermost coils of the springs of each group, and is bent or hooked as at 11 to in terlock with the springs. In the illustrated embodiment ofmy invention the tie plates 10 are secured to the face plate 2 by screws 12 extending through holes in the face plate 2 and threaded into the tie plates 10, the tie plates being usually provided with bosses 13 secured thereto.

In Figure 1 the ad-is shown as mounted upon the buck 14 o a pressing machine, and is compressed by the-head 15 of the machine. The spring pad is covered over with fabric pad 16, and wrapper 17.

In operation when the pressure is applied, it is first yieldingly applied by the head 15 as the springs compress. However the yielding of the springs is limited by the stops. 4 so that the full pressure of the machine can be applied without crushing or destroying the springs.

ioo

By this invention comparatively few in number of relatively strong. springs can be used, leaving a large hollow space within the padding to form a suction chamber to draw the moisture out of the padding through the llsrin perforations 9 when'the springs expand as the pressure is released.

WhatIclaim is:f 4

1. A pad -for pressing machines, compris- -I ing opposing, p ates, j springs between the plates, and stops projecting from one of the lates toward the other andbeing of less tributed over the 'area of the plate from 10 which they project.

2, A pressing machine pad comprising a plate, groups of, com 'ression springs secured at like endsto t e plate, and means for tying the other ends of eacli group of together, said .means comprising a p ateinterlocked with the end coils of the springs of-ea'ch group. i I 3. A pad comprisinga plate, springs'arranged in groups and secured at like ends 3 to the plate and means for fastening the other ends .of-;-t,he springs of each group together, com'prising'a tie late extending under the voutermostcoils o the springs, and having hookslocated within the springs for inter- 25 locking within such coils. I

4. 'A pad comprising a plate, springs arran fed in groups and secured at like ends .to t e plate and means for fastening the other ends of the springs. of each group together,

comprising a tie eng'th than the springs the stops being displate extending under the outermost coils 0 the springs, and having hooks located within the springs for interlocking within such coils, a face plate underlying the tie platesand fastening means ,extending through the 'face plate into the tie platesI.n

ing spaced apart a greater distance than the s rings of each 'group and stops located in a pressing machine pad comprising a plate, groups of compression springs se' cured at hke endsto the plate, the groups bet e spaces between the groups'for limiting v the compression of the springs. 6. A pressin machine pad comprising a "plate, groups 0 compressionsprings secured at like ends to the plate, the groups being spaced apart a greater distance than the springs of each-group,a' plate interlocked with the end coils at the other ends of the springs of each group, and a third plate opposed to the second mentioned plates, and

means for fastening the third plate and the second mentioned plate together.

In testimony whereof, I have hereunto signed my name, at Syracuse, in the county of Onondaga, and State of New York, this 6th day of February, 1926.

' ALBERT B. OLISSON. 

